Slightly under an hour. I noticed 2 things in here almost immediately that really helped speed the solve process. Weird solution? *********************************************** Optimization came quickly. Solve was hard Apparently I solved this. Didn’t realize it and then kept playing this for another 20 minutes. Spent a bunch of time trying to figure this guy out. Wayy to much effort for a level named bbbkb I see what you were going for here but it’s so rigid that the solve was immediately optimal for me Really enjoyed this one. Took me back to my pp1 roots. 
Insights